I have to resit a calculus exam and for some reason set proofs were never my best friend...
Anyway, on a practice exam I encountered the following proof:
$$A\cap(B\cup C) = (A\cap B)\cup(A\cap C)$$
When I draw a Venn-diagram it seems quite obvious but I couldn't manage to write the proof down properly.
If someone could help me, that'd be great!